Eyeglass guard



May 6, 1936. P, B RTRAM HAL 1,757,036

EYEGLASS GUARD Filed Nov. 24, 1928 INVENTORS cfaaob PBerzram IV 2 umzszfram THEIR ATTORNEY Patented May 6, 1930 FFICE PATENT JACOB .P. BERTRAM AND IVABDUNDSTBOM, OF ROCHESTER, NEW YORK, ASSIGNORS TO SHUR-ON STANDARD ORTICAL COMPANY; INC., 01 GENEVA, NEW YORK, A COR- IPOBATION 01 NEW YORK EYEGLASS GUARD Application filed November 24, 1928. Serial No. senses.

The invention relates to eyeglasses with more particular reference to the type involving ear engaging temples and rigidly mounted nose guards, and has for its chief'pu'rpose to afiord a construction of guard and method of manufacturing that enables producing a guard with an exterior surface entirely of zylonite, and such as to provide a practicable, durable, and attractive,neat appearing construction. I

Some eyeglass guards have heretofore been constructed of precious metals, such as white gold, and a serious objection to this form is that after continued wear, the acids of the human body affect the metal, causing the surface to wear ofi or tarnish and become unsightly in appearance as well asunsanitary otherwise attached to metal backs, but these havehad the objection that thefacing becomes loose, the rivets or metal attaching means become discolored and unsanitar and the'guard cannot be bent to difierent s apes. A purpose of this invention is to afiord a method that permits of producing a rigidlymounted nose guard with its entire exposed surface both front and back formed of lonite, and so constructed as to permit bengng or shaping theguard to fit it to any shape of nose.

It is well known that zylonite can be shaped when heated, and that if bent in a cold state is likely to chip or break, and one of the essential accomplishments of this invention is to so construct a zylonite guard that it can be bent to any desired shape without danger of breaking the zylonite and also without any likelihood of the zylonite returning to its original shape when the pressure is removed.

Another pur ose of the inventionis to ap- To these and other ends, the invention con- 1 sists in the method and construction that will appear clearly from the following description when read in conjunction with the accompanying drawings, the novel features be ing pointed out in the claims following the specification. i In the drawings:

Figure 1 is a rear elevation of an eyeglass frame with one embodiment of the invention incorporated therein, the temples and ends of the lens frames being broken away to show the guard constructionmore clearly;

Figure 2 is a top plan view of the structure shown in Figure 1 with a portion of the bridge broken away to show the connection between a lens frame and guard arm;

, Figure 3 is a view inelevation of a metal pad such as used in constructing the guard Figure 4 is a side elevation of the wire blank from which the guard supporting arm isinitially formed;

Figure 5 is a side view of the arm after attachment to the pad;

Figure 6 is an edge elevation of the struc-' ture shown in Figure 5;

Figure 7 is a view similar to Figure 5 after bending the pad and flattening the arm where it 'oins on to the pad;

igure 8 is an edge view of the structure shown in Figure 7;

Figure 9 is a sectional view on line 99 of Figure 7;

Figure 10 is an elevation of one of the zylonite facings;

"Figure 11 is an edge elevation of the same;

: Figure 12 is' a side elevation of the structure after attachment of the zylonite facings around the metal pad;

Figure 13 is an edge elevation of the structure shown in Figure 12;

Figure 14 is a view similar to Figure 12 after the arm is bent to proper shape for. attachment to a lens rim, and

Figure 15 is a sectional of Figure 14.

' he invention is shownas applied to an eyeglass or spectacle frame employing the usual ear engaging, temples, which are omitted for clearness, and nose guards rigid-f 1y mounted on the lens rims 1, which are connected byabridge2. U v 4 According to a preferred" Ian of procedure, the guardis constructe by cutting a flat pad 3 from a blank of suitable metal, the metal pad being of the same shape as that desired .for the finished. guard although of slightly less area, and 4 designates a wire rod of rounded cross-section which isto consti-v tute the arm that is ri idly connectedto the lens rim 1 and carries t e guard. Thearm 4 is rounded in order to permit ready application ofabending tool at any part for shap- 1 ing the arm in a finishedframe so as'to adjust the latter to the nose. The rounded arm 4 is rigidly. attached at one end to an edge of the metal pad'3 by soldering, welding,ior,

in an other suitable way, resulting in the unit ustrated'in Figures 5 and 6. v

D The finished guard is usually curved end wise and the next step in the process is to subject-the metal pad 3 and arm 4 to bending dies or other suitable pressure applying means so as to bend the pad 3 endwise as shown in Figure 8, and preferably .at the same time compress or flatten the arm 4 at thetgoint 5 where it joins on to the metal pad 3,' e purpose for which will appear presentli.

-- T metal unit comprising. the pad 3 and arm 4'isnow ready to have the desired .covermg a plied to it and for this purpose it is prefera 1e toform a pair of facings "of zylonite or similar substance. These facings are constructed as shown in Fi res'10 and 11, each bein of the same conormation as the metal a 3, and of but slightly greater area. Eac of the zylonite facings-is pref,- e rably recessed on one side as at 6, such recess being of alshape to exactly receive the metal pad 3 and bounded by the shoulder? which latter is recessed at 8 to accommodate the arm 4. B flattening the latter at 5, as already descri d, a close fit is made possible between the arm and the surrounding edges of the zylonite facin Preferably both rent and back zylonite facin' s are recessedas described, the shoulder 7 in only of suflicient width to insure firm'attac ent between the edges of the I facings, and thus to completely encase the metal-pad. With the zylonite facings constructed as described, they are positioned on the front and back of the metal pads?) in the manner shown in Figures'12 and 13, heat and res'sure being applied to bring about a uni.- I orm adherence betweenthe contacting outer 'ew on line 15. 15.

"' between the-adjacent surfaces .7 of the zylontant a vantages of an all-metal surfaces of the zylonite facings around the edge of the metalpad or backin Where desired or necessary, cement may 0 applied ite facings, although usuallythese can be efliciently unitedb applicatlonofzheat and y 'le it is preferred to re-' 'O-SS both zylonite facings as shown, if d-.

sired, the pad receiving recess maybe formed entirely within one of the zylo'nite'facings,

pressure only.

or the latter can be otherwise constructed Y throng Owing to the fact that the metal body 3 is of the same shape; and nearly as large. as the' zylonite covering, the 'gua'rd vith a complete ape any nose, with the assurance that the met'albase or pad 3wil1 always retain the (zylonite facings in the shaple to which they are" bent. The stiffness of t e metal pad'3 is s'uflicient to prevent the zylonitefrom returning to its 'original-shape,'- and owing to-the metal pad 3 conforming completel to the shape of the zylonite-facings and in of nearly as great area as the latter, any 1' elihood of the zylonite chipping or cracking is reduced to a The guardflconsequently can be bent or shaped while-cold as easily, safely, and practicably asithe usual all-metal ard.

When t e structure is completed, as shown inFigures 12 and 13, the arm 4 is'shaped as shown in Figures 14 and 15, and is ready .to have its free end soldered or otherwise attached to the lens. rim 1. "Owing to the zylonite covering'can bebent as desired'to s thedesirable features and advantages of a solid lonite guard with the equallyimpor- By the term zylonite, as use throughout the specification and claims, is meant cellu: loid or other compositions or materials hav-' ing characteristics and propertiessimilarto what is commercially known as zylonite.

1 While the invention has been described with respect-to certain definite procedure and a' specific construction, it is not confined to the etails herein set forth, andthis application is intended to cover any modifications or changes comin within the method. disclosed and intent of t e'improvements, or the scope of the following 01811118.:

We claim: 1. In a spectacle, the combination with a frame, and an elongated flat metal pad having free ends and fixedly mounted on the frame by means of an arm of relatively small cross section, of a zylonite covering. over the front, back and edges of the pad except where the arm is connected thereto, the covering being so supported on the pad as to permit endwise bending of the pad and covering.

2. In a spectacle, the combination with a frame and an elongated flat metal pad having free ends and bent along its longitudinal axis to form a convex nose-engaging surface, and

and rigidly connecting it to the frame, of zylonite facings completely encasing said pad except where the arm is secured thereto, said facings being of the same conformation as free from the pad whereby the facings and pad may be bent to conform to the shape of the nose and the pad retain the zylonite in the shape given it.

3. In a spectacle, the combination with a frame, and an velongated flat metal pad having free ends and bent along its longitudinal axis to form a convex nose-engaging surface, and an arm secured to a lateral edge of the pad and rigidly connecting it to the frame, of zyl onite facings completely encasing said pad except where the arm is secured thereto,

said facings being attached to each other at their edges around the pad and supported free from the pad whereby the facings and pad may be bent to conform to the shape of the nose and the pad will retain the zylonite in the shape given it.

In witness whereof, we have hereunto signed our names.

JACOB P. BERTRAM. IVAR SUNDSTROM.

an arm secured to a lateral edge of the pad the pad and supported thereon so as to be 

